diff options
Diffstat (limited to 'drivers/staging/rt3090/common/mlme_ex.c')
| -rw-r--r-- | drivers/staging/rt3090/common/mlme_ex.c | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/drivers/staging/rt3090/common/mlme_ex.c b/drivers/staging/rt3090/common/mlme_ex.c new file mode 100644 index 000000000000..d7fb7f58daee --- /dev/null +++ b/drivers/staging/rt3090/common/mlme_ex.c @@ -0,0 +1,215 @@ +/* + ************************************************************************* + * Ralink Tech Inc. + * 5F., No.36, Taiyuan St., Jhubei City, + * Hsinchu County 302, + * Taiwan, R.O.C. + * + * (c) Copyright 2002-2007, Ralink Technology, Inc. + * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * You should have received a copy of the GNU General Public License * + * along with this program; if not, write to the * + * Free Software Foundation, Inc., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + * * + ************************************************************************* + + Module Name: + mlme_ex.c + + Abstract: + Miniport generic portion header file + + Revision History: + Who When What + -------- ---------- ---------------------------------------------- + Fonchi 2007-06-25 Extend original mlme APIs to support multi-entries +*/ + +#include "../rt_config.h" +#include "../mlme_ex_def.h" +//#include <stdarg.h> + + +// =========================================================================================== +// state_machine +// =========================================================================================== + +/*! \brief Initialize the state machine. + * \param *S pointer to the state machine + * \param Trans State machine transition function + * \param StNr number of states + * \param MsgNr number of messages + * \param DefFunc default function, when there is invalid state/message combination + * \param InitState initial state of the state machine + * \param Base StateMachine base, internal use only + * \pre p_sm should be a legal pointer + * \post + */ +VOID StateMachineInitEx( + IN STATE_MACHINE_EX *S, + IN STATE_MACHINE_FUNC_EX Trans[], + IN ULONG StNr, + IN ULONG MsgNr, + IN STATE_MACHINE_FUNC_EX DefFunc, + IN ULONG InitState, + IN ULONG Base) +{ + ULONG i, j; + + // set number of states and messages + S->NrState = StNr; + S->NrMsg = MsgNr; + S->Base = Base; + + S->TransFunc = Trans; + + // init all state transition to default function + for (i = 0; i < StNr; i++) + { + for (j = 0; j < MsgNr; j++) + { + S->TransFunc[i * MsgNr + j] = DefFunc; + } + } + + // set the starting state + S->CurrState = InitState; + + return; +} + +/*! \brief This function fills in the function pointer into the cell in the state machine + * \param *S pointer to the state machine + * \param St state + * \param Msg incoming message + * \param f the function to be executed when (state, message) combination occurs at the state machine + * \pre *S should be a legal pointer to the state machine, st, msg, should be all within the range, Base should be set in the initial state + * \post + */ +VOID StateMachineSetActionEx( + IN STATE_MACHINE_EX *S, + IN ULONG St, + IN ULONG Msg, + IN STATE_MACHINE_FUNC_EX Func) +{ + ULONG MsgIdx; + + MsgIdx = Msg - S->Base; + + if (St < S->NrState && MsgIdx < S->NrMsg) + { + // boundary checking before setting the action + S->TransFunc[St * S->NrMsg + MsgIdx] = Func; + } + + return; +} + +/*! \brief This function does the state transition + * \param *Adapter the NIC adapter pointer + * \param *S the state machine + * \param *Elem the message to be executed + * \return None + */ +VOID StateMachinePerformActionEx( + IN PRTMP_ADAPTER pAd, + IN STATE_MACHINE_EX *S, + IN MLME_QUEUE_ELEM *Elem, + USHORT Idx, + PULONG pCurrState) +{ + if (S->TransFunc[(*pCurrState) * S->NrMsg + Elem->MsgType - S->Base]) + (*(S->TransFunc[(*pCurrState) * S->NrMsg + Elem->MsgType - S->Base]))(pAd, Elem, pCurrState, Idx); + + return; +} + +/*! \brief Enqueue a message for other threads, if they want to send messages to MLME thread + * \param *Queue The MLME Queue + * \param Machine The State Machine Id + * \param MsgType The Message Type + * \param MsgLen The Message length + * \param *Msg The message pointer + * \return TRUE if enqueue is successful, FALSE if the queue is full + * \pre + * \post + * \note The message has to be initialized + */ +BOOLEAN MlmeEnqueueEx( + IN PRTMP_ADAPTER pAd, + IN ULONG Machine, + IN ULONG MsgType, + IN ULONG MsgLen, + IN VOID *Msg, + IN USHORT Idx) +{ + INT Tail; + MLME_QUEUE *Queue = (MLME_QUEUE *)&pAd->Mlme.Queue; + + // Do nothing if the driver is starting halt state. + // This might happen when timer already been fired before cancel timer with mlmehalt + if (RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_HALT_IN_PROGRESS)) + return FALSE; + + + // First check the size, it MUST not exceed the mlme queue size + if (MsgLen > MAX_LEN_OF_MLME_BUFFER) + { + DBGPRINT_ERR(("MlmeEnqueueEx: msg too large, size = %ld \n", MsgLen)); + return FALSE; + } + + if (MlmeQueueFull(Queue)) + { + + return FALSE; + } + + RTMP_SEM_LOCK(&Queue->Lock); + Tail = Queue->Tail; + Queue->Tail++; + Queue->Num++; + if (Queue->Tail == MAX_LEN_OF_MLME_QUEUE) + { + Queue->Tail = 0; + } + Queue->Entry[Tail].Occupied = TRUE; + Queue->Entry[Tail].Machine = Machine; + Queue->Entry[Tail].MsgType = MsgType; + Queue->Entry[Tail].MsgLen = MsgLen; + Queue->Entry[Tail].Idx = Idx; + if (Msg != NULL) + NdisMoveMemory(Queue->Entry[Tail].Msg, Msg, MsgLen); + + RTMP_SEM_UNLOCK(&Queue->Lock); + + return TRUE; +} + +/* + ========================================================================== + Description: + The drop function, when machine executes this, the message is simply + ignored. This function does nothing, the message is freed in + StateMachinePerformAction() + ========================================================================== + */ +VOID DropEx( + IN PRTMP_ADAPTER pAd, + IN MLME_QUEUE_ELEM *Elem, + PULONG pCurrState, + USHORT Idx) +{ + return; +} |